NDA (National Defence Academy) Mathematics: Questions 84  89 of 384
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Question number: 84
» Matrices and Determinants » Basic Properties of Determinant
Appeared in Year: 2012
Question
Consider the following statement:
Every Zero matrix is a square matrix.
A matrix has numerical value.
A unit matrix is a diagonal matrix.
Which of the above statement is/are correct?
Choices
Choice (4)  Response  

a.  Only 

b.  Only 

c. 


d. 


Question number: 85
» Algebra » Complex Numbers » Basic Properties
Appeared in Year: 2016
Question
If is a complex number, then which one of the following is correct?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 86
» Statistics and Probability » Union and Intersection of Events
Question
Out of first year students, passes in first semester and passed in the second semester. If did not pass in either semester, how many passed in both semesters?
Choices
Choice (4)  Response  

a.  200 

b.  100 

c.  120 

d.  110 

Question number: 87
» Algebra » Complex Numbers » Modulus
Appeared in Year: 1960
Question
If Where, , then what is the value of?
Choices
Choice (4)  Response  

a. 


b.  0 

c.  1 

d. 


Question number: 88
» Algebra » Arithmetic Progression
Question
The sixth term of an is and it’s common difference is greater than What is the common difference of the , so that the product of the second, fifth and six terms is greatest?
Choices
Choice (4)  Response  

a.  0 

b. 


c. 


d. 


Question number: 89
» Analytical Geometry of Two and Three Dimensions » Rectangular Cartesian Coordinate System
Question
What is perimeter of the triangle with vertices and ?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

